One of the most masterpoxen episodes of this popular series (yes, I made up that word). Even the Lucky Strike commercials are interesting and fun.

Highly recommended. Watch it!

Season 4, Episode 7.
Original air date: 17 January 1954.
Jack visits the home of Liberace, but even he isn`t ready for the outrageous extravagance he sees there,
Cast: Jack Benny (Jack Benny), Eddie `Rochester` Anderson (Rochester Van Jones), Don Wilson (Don Wilson), Liberace (Liberace), Bea Benaderet (Gertrude, switchboard operator), Shirley Mitchell (Mabel, switchboard operator), Rex Evans (Geoffrey, the butler), Lois Corbett (Lois Wilson), Rolfe Sedan (Pierre, the chef), Ray MacDonnell, Roland Peat, Dorothy Collins (Lucky Strike Commercials: uncredited), Lois Corbett (Lois Wilson: uncredited) and Ray Montgomery (Man in Lobby: uncredited).
From IMDB.

It was a treat to be able to see Jack play a whole, serious number with Liberace, no slouch as a musician himself! The sight gag after the concert was classic, but I won't give it away here. Just watch and laugh!